Specifications

TM023 Integrity 26L Service Instructions REV: B
D.O.I: 17/10/2007
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
8
Product Changes
Software Changes
Models manufactured after May 2006 have a change to the software which controls the
operation of the heater. When an inlet water temperature of more than 58ºC and more
than the set point temperature minus 2ºC is detected by the inlet water temperature
thermistor, the fan and burner will not operate.
This function has been introduced to enhance the operation of the water heater and
remove the need for a Solar Bypass Valve when the Integrity 26 is connected as an in-
series gas booster to a solar water heating system (for more information refer to ‘In-series
Gas Boosting’ on page 12).
Models with the revised software have a -B suffix added to the model number i.e.
871026NF-B.
Parts Replacement & Wiring Changes for 871026 & 875026 Model Heaters Only
Some parts for 871026 & 875026 model heaters have been superseded and are no longer
available (refer to following tables). If any of these superseded parts are found to be faulty
they must be replaced with current parts available for 871026-B and 875026-B model
heaters.
Some current parts utilise different wiring connectors/connections necessitating the
replacement of other interconnecting components when installed in 871026 and 875026
model heaters (refer to ‘Parts Replacement Scenarios’ on page 9). Part numbers shown in
the following tables which are not marked with an asterisk (*) can be considered a direct
replacement and require no additional components or modifications when installed in
871026 and 875026 model heaters.
Note: The parts lists shown on pages 61 - 64 are for current 871026-B and 875026-B
model heaters; superseded part numbers for 871026 and 875026 model heaters are not
shown therein however they are listed in the following tables.
Su
p
erseded Model Current Model
Item Description
871026NF / 871026PF 871026NF-B / 871026PF-B
Nozzle Plate NG N/
A
31-76238-00
115
Nozzle Plate LP N/
A
N/
A
410 Water Bod
y
Ass
y
31-76285-00 31-76658-00
701 Overheat Limite
r
54-02730-00 *31-79562-00
705
A
nti-frost heater
A
WH0020047 31-71644-00
706
A
nti-frost heater B WH0020048 31-71643-00
712 Thermistor
(
ambient air
)
WH0020052 *Now
p
art of item 758
713 Thermistor Outlet
(
B
)
WH0020181 *20-64774-00
714
A
nti-frost thermostat WH0020054 20-57072-00
715 Thermistor HX WH0020053 *Now
p
art of item 758
717 Thermistor Inlet
(
A
)
WH0020180 *20-64773-00
723 Hall IC Ass
y
31-28085-00 *20-43805-00
745 PCB 31-76604-0S 31-76623-0S
757 100V Line Cord 31-23674-00 31-76653-00
758 Si
g
nal Loom WH0020067 *31-76655-00
773 Power Filte
r
WH0020079 *31-71642-00
780 Power cord WH0020071 *31-76652-00
783 Transforme
r
WH0020073 *31-71646-00
784 Connectin
g
Cord 31-23492-00 *31-71641-00
*When installed in 871026 & 875026 model heaters these parts will require the replacement of other
interconnecting components. Refer to ‘Parts Replacement Scenarios’ on page
9 for more information.